Riveting clamp



Jan/27, 1942. .H. HUTCHINGS RIVEIING CLAMP Filed- Aug. '7, 1939INVENTOR. 70/121 H Ha fchz'n 5 BY 8. W

ATTOR EY.

Patented Jan. 27, 1942 sired to prevent slipping.

UNITED STATES f PATENT opt-m John H. Hutchings, Los Angeles, Calif.,assignor, by mesne assignments, to .The Cleveland Pneumatic ToolCompany, Cleveland,

corporation of Ohio Ohio, a

13 Claims.

This invention relates to riveting and more particularly to a centeringand locking device for riveted parts.

An object'of the invention is to provide a simple; practicaland'inexpensive device of the character described.

Another object is to provide a spring vclamp that will hold rivetingplates together when in alignment for the riveting operation.

A further object is to provide a'riveting clamp for centering theriveting holes which may be operated by hand andreadily retracted forsuccessive use.

Other objects and advantages will appear and be brought out more fullyin the following specification, reference being had to the accompanyingdrawing, wherein:

Fig. 1 is a perspective view showing two plates to be riveted togetherusing the invention;

Fig. 2 is a perspective view 'of the riveting clamp of the invention;

Fig. 3 is a sectional view taken substantially along the line 2-3 ofFig. 1;

Fig. .4 is a view substantially similar to Fig. 3 showing the device innormal inoperative position;

Fig. 5 is an end view as seen substantially fro the point I in Fig. 3;and

Fig. 6 is a separate view of the plunger element.

Referring more particularly to the drawing, I show a cylinder or body llhaving an end face H, a flange l2, a tapered bore 12, and a cylindricalbore I having a shoulder ii. A plunger I6 is reciprocable in bore and isurged outwardly by spring" between it and shoulder II. A pair of jawmembers II are pivoted at II to plunger 18 and have side portions 22tapered similar to the taper of bore l2. Members 20 each have anenlarged pointed end portion 2| and a shoulder 22 thereon. A compressionspring 22 is secured between members I! in any suitable manner such asby recesses 2|, and normally urges the members it apart. Face ll may beknurled if de- The operation of the deviceshould be apparent from theforegoing description. shown a pair of plates 25 having overlapping edgeportions 26 which are to be riveted together, the plates being providedwith apertures or rivet holes 21. The plates 25 are brought intoapproximate alignment for riveting and riveting clamps of this inventionare inserted in rivet holes 21 at intervals such as one out of everyfour or five.

The cylinder i0 is held between two fingers as shown in Fig. 2 andplunger ll pressedinwardly,

InFlg.1is

as shownin dotted lines in Fig. 3 by the action of tapers 20 in taperedbore can be inserted through apertures 21 and upon release of thepressure against plunger l8 and retraction of members 18, ends 2|separate through action of spring 28 as shown in Fig. 3, thus resultingin the plates 25 being clamped between face II and shoulders 22 whilethe intervening riveting holes 21 will be maintained in alignment forriveting. After the intervening riveted holes have been riveted, theclamped devices may be removed and the holes thus left can be rivetedand the clamps used over and over again. Thus the riveting operation forplates can be speeded up very materially from ,other methods heretoforeused. This time element is of great importance in certain industries,such as the manufacture of airplanes and others where speed is theimportant factor..

Having described my invention, what I claim l. A device of the characterdescribed'comprising a body having a tapered bore and a trans verse endabutment, a pair of Jaw members in said bore having tapered sides andshouldered end portions beyond said abutment, said end portions adaptedto be moved toward each other when said members are. advancedin saidbore whereby said end portions may be inserted through a rivet hole,sald end portions adapted to be separated to engage the under side of aplate and means to hold same against said abutment when said members areretracted in said bore.

2. A device of the character described comprising a body, an aperture insaid body having a tapered portion, aplunger in said bore having may bedrawn together and inserted through the rivet holes of a pair of platemembers when said plunger and jaw members are advanced in said apertureand said end portions may be expanded and hold said plate membersagainst said body face, and said plunger and jaw members retract: ed insaid aperture by the action of said spring member in engagement withsaid plunger.

- 3. A fastener for temporarily holding together. at least twoperforated sheets in superposed relation, including a housing having abase adapted to rest on the upper sheet, a vertical bore through saidbase, a retainer slidable in said housing inbase, said projections beinglaterally movable to- Thus ends 2| to ward each other for insertionthrough aligned bore.

perforations 01 said sheets and laterally movable away from each otherfor engagement with the ing a spring responsive to the slidable movementof said retainer in one direction for effecting lateral movement oi saidprojections away from each other.

4. A i'astener for temporarily holding together end portions away fromeach other, and cam means .between said body and jaw members reunderside oi. the lower sheet, and means includsponsive to the slidablemovement of said members in one direction for eii'ecting lateralmovement 01' said end portions toward each other.

9. A temporary rivet including an elongated retaining member iormedwith-an open end slot extending longitudinally from 'one end thereof,

at least two perforated sheets in superposed re- 4 lation, including ahousing having a base adapted,

, means including a spring responsive to the slidable movement of saidlegs in the other direction for eflecting lateral movement of saidprojections away irom each other.

5. In a device of the character described, a body having-a boreextending vertically therethrough, a latch element slidable in said bodythrough said bore, a lateral projection on said element below said body,said projection being movable into or out of the marginal edge of saidbore, means active-on said element normally urging it out 01' themarginal edge of said bore, and cam means between said body and element.responsive to the slidable movement of said element in one direction foreiiecting movement of said projection into the marginal edge of said 6.In a device of the character described, a housing having a boreextending axially therethrough, a latch element slidable in said housingthrough said bore, a lateral projection on said element below saidmousing, said projection being movable into or out oi the marginal edgeor said bore, means responsive to the slidable movement oisaid elementin one direction for eflecting movement of said projection intothemarginal edge of said bore, and means including a spring member activeon said element for eflecting movement of said projection out or themarginal edge of said bore during movement of said element in the otherdirection.

7. A device oi the character described comprising a body having atapered bore and a transverse end abutment, a pair of jaw membersslidable in said bore having shouldered end portionsbeyond saidabutment, said end portions being movable toward each other duringslidable movement of said jaw members in one direction by virtue of theengagement 01 said member with the tapered wall oi said bore, and meansactive on said jaw members responsive to their slidable lateralprojections on said member one on each side oi-said slot, a projectingelement extending transversally of said member and slidable with respectthereto at least up to said projection,

means including a spring responsive to the slid-' able movement 0! saidmember relative to said element in one direction for eii'ecting lateralmovement of said projections away from each other, and means responsiveto the slidable movement of said member relative to said element in theother direction for eiiecting lateral movement of said projectionstoward each other.

10. A device of the character described com prising a body having a boreextending vertically therethrough, a plunger slidable in said bore, a

I pair of jaw members pivotally connected to said plunger for slidablemovement therewith, shouldered end portions on said members below saidbody being pivotally movable into or out of the marginal edge of saidbore, and means responsive to the slidable movement of said plunger i'orenacting pivotal movement 01' said end projections into or out 01' themarginal edge of said bore.

11. A device or the character described comprising a body having a boreextending vertically therethrough, a plungerslidable in saidbore, a

latch element pivotally connected to said plunger ior slidable movementtherewith, a lateral projection on said element below said body, saidprojection being movable into or out of the mar-' ginal edge 01' saidbore by virtue of the pivotal movement 01 said element, and meansresponsive to the slidable movement of said latch element for eiiectingits pivotal movement.

12. A device of the character described comprising a body having a boreextending vertically therethrough, a plunger slidable in said bore, apair oi jaw members pivotally connected to said plunger tor slidablemovement therewith in said bore, shouldered end portions on said membersbelow said body, said end portions being movable into or out of themarginal edge of said bore by virtue of the pivotal movement or said jawmembers, and means responsive to the slidable movemovement in the otherdirection for eiiecting movement oi said end portions away from eachother.

8. A device 01' the character described comprising a body having a boreextending vertically therethrough, a pairof jaw members slidable in saidbore having shouldered end portions below said body, said end portionsbeing laterally movable toward or away from each other, means betweensaid jaw members normally urging said ment of said jaw members oreffecting said pivotal movement.

13.. A device of the character described com-- prising a body havinga'bore extending vertically therethrough formed with a straight and atapered portion, a plunger slidablerin the straight portion of said.bore, a pair oi jaw members in wall oi the tapered portion 0! back andforth slidable movement of said members eflects said pivotal movement.

and resilient means constantly urging said members in engagement withthesaid bore whereby JOHN H. I

